+///////////////////////////////////////////////////////////////////////////////
+// Name: src/osx/cocoa/dnd.mm
+// Purpose: wxDropTarget, wxDropSource implementations
+// Author: Stefan Csomor
+// Modified by:
+// Created: 1998-01-01
+// RCS-ID: $Id: dnd.cpp 61724 2009-08-21 10:41:26Z VZ $
+// Copyright: (c) 1998 Stefan Csomor
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#include "wx/wxprec.h"
+
+#if wxUSE_DRAG_AND_DROP
+
+#include "wx/dnd.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+ #include "wx/evtloop.h"
+ #include "wx/toplevel.h"
+ #include "wx/gdicmn.h"
+ #include "wx/wx.h"
+#endif // WX_PRECOMP
+
+#include <AppKit/AppKit.h>
+#include "wx/osx/private.h"
+
+wxDragResult NSDragOperationToWxDragResult(NSDragOperation code)
+{
+ switch (code)
+ {
+ case NSDragOperationCopy:
+ return wxDragCopy;
+ case NSDragOperationMove:
+ return wxDragMove;
+ case NSDragOperationLink:
+ return wxDragLink;
+ case NSDragOperationNone:
+ return wxDragNone;
+ default:
+ wxFAIL_MSG("Unexpected result code");
+ }
+}
+
+@interface DropSourceDelegate : NSObject
+{
+ BOOL dragFinished;
+ int resultCode;
+ wxDropSource* impl;
+}
+
+- (void)setImplementation: (wxDropSource *)dropSource;
+- (BOOL)finished;
+- (NSDragOperation)code;
+- (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint operation:(NSDragOperation)operation;
+@end
+
+@implementation DropSourceDelegate
+
+- (id)init
+{
+ [super init];
+ dragFinished = NO;
+ resultCode = NSDragOperationNone;
+ impl = 0;
+ return self;
+}
+
+- (void)setImplementation: (wxDropSource *)dropSource
+{
+ impl = dropSource;
+}
+
+- (BOOL)finished
+{
+ return dragFinished;
+}
+
+- (NSDragOperation)code
+{
+ return resultCode;
+}
+
+- (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint operation:(NSDragOperation)operation
+{
+ resultCode = operation;
+ dragFinished = YES;
+}
+
+@end
+
+wxDropTarget::wxDropTarget( wxDataObject *data )
+ : wxDropTargetBase( data )
+{
+
+}
+
+bool wxDropTarget::CurrentDragHasSupportedFormat()
+{
+ if (m_dataObject == NULL)
+ return false;
+
+ return m_dataObject->HasDataInPasteboard( m_currentDragPasteboard );
+}
+
+bool wxDropTarget::GetData()
+{
+ if (m_dataObject == NULL)
+ return false;
+
+ if ( !CurrentDragHasSupportedFormat() )
+ return false;
+
+ return m_dataObject->GetFromPasteboard( m_currentDragPasteboard );
+}
+
+//-------------------------------------------------------------------------
+// wxDropSource
+//-------------------------------------------------------------------------
+
+wxDropSource::wxDropSource(wxWindow *win,
+ const wxCursor &cursorCopy,
+ const wxCursor &cursorMove,
+ const wxCursor &cursorStop)
+ : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
+{
+ m_window = win;
+}
+
+wxDropSource::wxDropSource(wxDataObject& data,
+ wxWindow *win,
+ const wxCursor &cursorCopy,
+ const wxCursor &cursorMove,
+ const wxCursor &cursorStop)
+ : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
+{
+ SetData( data );
+ m_window = win;
+}
+
+wxDragResult wxDropSource::DoDragDrop(int flags)
+{
+ wxASSERT_MSG( m_data, wxT("Drop source: no data") );
+
+ wxDragResult result = wxDragNone;
+ if ((m_data == NULL) || (m_data->GetFormatCount() == 0))
+ return result;
+
+ NSView* view = m_window->GetPeer()->GetWXWidget();
+ if (view)
+ {
+ NSPasteboard *pboard;
+
+ pboard = [NSPasteboard pasteboardWithName:NSDragPboard];
+
+ OSStatus err = noErr;
+ PasteboardRef pboardRef;
+ PasteboardCreate((CFStringRef)[pboard name], &pboardRef);
+
+ err = PasteboardClear( pboardRef );
+ if ( err != noErr )
+ {
+ CFRelease( pboardRef );
+ return wxDragNone;
+ }
+ PasteboardSynchronize( pboardRef );
+
+ m_data->AddToPasteboard( pboardRef, 1 );
+
+ NSEvent* theEvent = (NSEvent*)wxTheApp->MacGetCurrentEvent();
+ wxASSERT_MSG(theEvent, "DoDragDrop must be called in response to a mouse down or drag event.");
+
+ NSImage* image = [[NSImage alloc] initWithSize: NSMakeSize(16,16)];
+ DropSourceDelegate* delegate = [[DropSourceDelegate alloc] init];
+ [delegate setImplementation: this];
+ [view dragImage:image at:NSMakePoint(0.0, 16.0) offset:NSMakeSize(0.0,0.0)
+ event: theEvent pasteboard: pboard source:delegate slideBack: NO];
+
+ wxEventLoopBase * const loop = wxEventLoop::GetActive();
+ while ( ![delegate finished] )
+ loop->Dispatch();
+
+ result = NSDragOperationToWxDragResult([delegate code]);
+ [delegate release];
+ [image release];
+ }
+
+
+ return result;
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+
projects / wxWidgets.git / commitdiff
